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 gr8fzy1
 
Location: Waterbury, CT
Gender: Male
Fewer and Fewer...
 |  |  |  | Questions about SLR's
< on 2/4/2008 4:07 PM >
|  | | | I just got a few Pentax K1000's and a bunch of lens for them, but before I go and buy film and stuff for them I want to know a few things. I only have one question for now...what's an F stop?
Softly creeping through
Empty hallways decades old,
glimpsing history. |
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KevinOger
Location: Raleighwood, NC
Gender: Male
| | Re: Questions about SLR's
<Reply # 1 on 2/4/2008 4:15 PM >
| | | | The f/stop regulates how much light is allowed through the lens by varying the area of the hole the light comes through.
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gr8fzy1
Location: Waterbury, CT
Gender: Male
Fewer and Fewer...
| | | | Re: Questions about SLR's
<Reply # 2 on 2/4/2008 4:33 PM >
| | | | Posted by KevinOger
The f/stop regulates how much light is allowed through the lens by varying the area of the hole the light comes through.
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So a f/1.2 or f/1.8 would be pretty dim?
Softly creeping through
Empty hallways decades old,
glimpsing history. |
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RobTech
Location: 'da 305
Gender: Male
20 Year's, and still looking ...
| | |  | Re: Questions about SLR's
<Reply # 3 on 2/4/2008 4:37 PM >
| | | | Posted by gr8fzy1
So a f/1.2 or f/1.8 would be pretty dim?
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It works the other way around, the lower the number the bigger the opening.
Home of Florida's Explorers
Flurbex.com |
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aaronni
  
Location: South Puget Sound
| | Re: Questions about SLR's
<Reply # 4 on 2/4/2008 4:38 PM >
| | | | It's actually read as a fraction so the higher the number the dimmer it will become. But the number also designates your camera's range of focus, a higher F Stop will bring more subjects into focus.
http://en.wikipedia.org/wiki/F-number
Example being this flower.
F5
F32
See the difference?
never know until you go |
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don_corleyone
Location: F/RoX
Gender: Male
I have abandonment issues
| | Re: Questions about SLR's
<Reply # 5 on 2/4/2008 4:39 PM >
| | | | the f-stop number they put on the lens is the maximum aperature the lens will open to, and as said before, it's a fraction, so the larger the number, the smaller the hole.
leave the gun. take the cannoli.
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gr8fzy1
Location: Waterbury, CT
Gender: Male
Fewer and Fewer...
| | | | Re: Questions about SLR's
<Reply # 6 on 2/4/2008 4:49 PM >
| | | | Ah...okay and what about the other numbers on the lens...usually ranging from 2-22.
Is that the apperature? How does apperature differ from F stop?
Softly creeping through
Empty hallways decades old,
glimpsing history. |
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aaronni
Location: South Puget Sound
| | Re: Questions about SLR's
<Reply # 7 on 2/4/2008 5:06 PM >
| | | | Actually Aperture and F Stop are one in the same I believe...
http://en.wikipedia.org/wiki/Aperture
Strange ehh?
never know until you go |
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insainly sound
Location: Bay Area, CA
Gender: Female
How'd we get here, and how are we getting out of here?!
| | | Re: Questions about SLR's
<Reply # 8 on 2/4/2008 7:41 PM >
| | | | From my understanding, the aperture is the variable opening, and the measurement of those is the f/ stop. Well that's the simplest way to describe it... Another note just on lenses, is higher quality lenses (Nikon, Canon, etc.) have rounded blades for the aperture and those give smoother blurring from the focus point to the background.
Check out my photo blog! |
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KevinOger
Location: Raleighwood, NC
Gender: Male
| | Re: Questions about SLR's
<Reply # 9 on 2/4/2008 9:27 PM >
| | | | sorry i didnt go into more detail above, i was at work. the guys me have done an excellent job, but i'll finish what i started anyway and just condense some of this info.
1. Your F-Stop is a label for the size of your aperture. The aperture is the actual hole that lets light in through the lens, usually via a series of "blades" that fit together inside the lens, the "f-stop" is the number associated with that hole at different sizes, the measuring nomenclature.
2. F-stops are like earring gauges, the lower the f-stop number, the bigger the aperture.
3. The lower number that lens has, for example a 1.8 f-stop on my 50mm lens, the more light that lens will let in at a given time. Think of this like the handle on your faucet at home. You can crank it wide open and fill up your glass of water fast, or you can let it trickle in. Depends on how big your glass is and how much water you want.
4. In regard to focus, each F-stop progressively focuses on one point in the picture more and more. this is a rough way of explaining depth of field. Think of your picture as being composed of several overlapping planes, at its most basic one in the front, one in the middle, and one in the back. Sometimes you want all of these planes in focus, sometimes only one or two. The f-stop allows you to make that choice in certain situations. The lower you can go, ie 1.8, the more out of focus the objects around your main subject can be.
Hope that made more sense. Please correct me if i'm wrong, i know there are agood number of veterans on here with a better grasp than me.
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Witek
Location: Everywhere.
Gender: Male
onwards.
| | | Re: Questions about SLR's
<Reply # 10 on 2/4/2008 11:13 PM >
| | | | I will pay money for your 1.2
V-tech = V-Tek = Veetek = Witek. Make it count, say it right. |
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atomx
 
Location: Brighton, ON
Gender: Male
| | | Re: Questions about SLR's
<Reply # 11 on 2/5/2008 12:42 AM >
| | | | 
http://photography...tures/ss/DOF_2.htm
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." - Richard Cook |
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gr8fzy1
Location: Waterbury, CT
Gender: Male
Fewer and Fewer...
| | | | Re: Questions about SLR's
<Reply # 12 on 2/5/2008 4:55 PM >
| | | |
Lol, Nice visual AtomX!
Softly creeping through
Empty hallways decades old,
glimpsing history. |
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gr8fzy1
Location: Waterbury, CT
Gender: Male
Fewer and Fewer...
| | | | Re: Questions about SLR's
<Reply # 13 on 2/5/2008 5:12 PM >
| | | | Posted by KevinOger
sorry i didnt go into more detail above, i was at work. the guys me have done an excellent job, but i'll finish what i started anyway and just condense some of this info.
1. Your F-Stop is a label for the size of your aperture. The aperture is the actual hole that lets light in through the lens, usually via a series of "blades" that fit together inside the lens, the "f-stop" is the number associated with that hole at different sizes, the measuring nomenclature.
2. F-stops are like earring gauges, the lower the f-stop number, the bigger the aperture.
3. The lower number that lens has, for example a 1.8 f-stop on my 50mm lens, the more light that lens will let in at a given time. Think of this like the handle on your faucet at home. You can crank it wide open and fill up your glass of water fast, or you can let it trickle in. Depends on how big your glass is and how much water you want.
4. In regard to focus, each F-stop progressively focuses on one point in the picture more and more. this is a rough way of explaining depth of field. Think of your picture as being composed of several overlapping planes, at its most basic one in the front, one in the middle, and one in the back. Sometimes you want all of these planes in focus, sometimes only one or two. The f-stop allows you to make that choice in certain situations. The lower you can go, ie 1.8, the more out of focus the objects around your main subject can be.
Hope that made more sense. Please correct me if i'm wrong, i know there are agood number of veterans on here with a better grasp than me.
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I'm saving your description to my computer. Thank you Kevin.
Softly creeping through
Empty hallways decades old,
glimpsing history. |
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leatherman
Location: Texas
Gender: Male
| | Re: Questions about SLR's
<Reply # 14 on 2/9/2008 4:34 AM >
| | | | There are these books called Magic Lantern that have alot of good info for slrs.
I bought one for my slr and i didn't know jack about the terms.
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don_corleyone
Location: F/RoX
Gender: Male
I have abandonment issues
| | Re: Questions about SLR's
<Reply # 15 on 2/9/2008 10:51 PM >
| | | | best words of advice: read a book.
seriously - it really helps. i read mastering digital photography a while ago (actually i just skimmed thru it) then i bought my buddy a book for christmas called get the most from your digital camera which (being the cheapskate i am) i read before i wrapped it.
even after reading the first book a year ago, the second book really helped. it's easy to read and had chapters not just on composition and technique, but "the digital darkroom" as well, teaching you the basics on how to post process your photos to get the most out of each shot.
leave the gun. take the cannoli.
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SkaSkank
Location: North East
Gender: Male
You can't wait for inspiration, you have to go after it with a club.
| | Re: Questions about SLR's
<Reply # 16 on 2/10/2008 1:47 AM >
| | | | Just my 2 cents.
I also recently bought a pentax k1000, and I'm telling you man, you're going to love it. It takes a little getting used to if you shot digital before, but trust me it's great. There's a ton of stuff you can do. I really like the nostalgic feeling it has, but also there's a lot you can do with it. Shooting film helps you to value your shots more. It also has a bulb mode , which is pretty sweet. Get out there and take some shots!
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Air
 
Location: Canada
| | Re: Questions about SLR's
<Reply # 17 on 2/10/2008 2:13 AM >
| | | | Posted by Witek
I will pay money for your 1.2
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beat me to it. 
"The extraordinary beauty of things that fail." - Heinrich von Kleist |
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micro
Gender: Male
Slowly I turned
| | Re: Questions about SLR's
<Reply # 18 on 2/10/2008 3:22 AM >
| | | | I'd avoid using lenses that have f-stops since most of them are obsolete and of inferior quality. Save your money and get ones that have g-stops or (if you can afford them) h-stops. F-stops were introduced by Pentax back in the 70s and never really caught on due to their incompatibility with other camera systems. Don't get me wrong, the lenses you have are perfectly useable, but you'll find that the numbers can get pretty confusing at times.
If you run into any problems, you'll find that www.google.com and www.ask.com are both great resources. Simply ask a question and wait for the response. Trust me, it'll save everyone a lot of time.
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gr8fzy1
Location: Waterbury, CT
Gender: Male
Fewer and Fewer...
| | | | Re: Questions about SLR's
<Reply # 19 on 2/11/2008 9:41 PM >
| | | | Posted by Air 33
Posted by Witek
I will pay money for your 1.2 |
beat me to it.
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I don't have a 1.2 or 1.8. I was using it as an example. The lowest F-stop I have is a 2, and that's with the stock lenses that came with the Pentax's.
Posted be SkaSkank
Just my 2 cents.
I also recently bought a pentax k1000, and I'm telling you man, you're going to love it. It takes a little getting used to if you shot digital before, but trust me it's great. There's a ton of stuff you can do. I really like the nostalgic feeling it has, but also there's a lot you can do with it. Shooting film helps you to value your shots more. It also has a bulb mode , which is pretty sweet. Get out there and take some shots! |
I know what you mean Skank, I hold that K1000 and I FEEL like a photographer. And I only shot digital because I had no financial choice. I STILL don't, but my mom assures me that the film isn't gonna be THAT expensive...That most of the money I'll spend will be for processing the rolls.
One question though...what's "bulb mode"?
Softly creeping through
Empty hallways decades old,
glimpsing history. |
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